puborectalis

noun
pu·​bo·​rec·​ta·​lis | \ˌpyü-bō-rek-ˈtā-ləs \

Medical Definition of puborectalis 

: a band of muscle fibers that is part of the pubococcygeus, that passes from the pubic symphysis to interdigitate with the contralateral band of fibers forming a sling around the rectum at its junction with the anal canal, and that acts to hold the rectum and anal canal at right angles to each other except during defecation

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